A. 分组数据 B. 汇总数据 C. 格式化数据 D. 输入数据
A. 正确 B. 错误
A. 提高隔墙保温性能 B. 提高外门保温性能 C. 提高外窗保温性能 D. 提高外窗气密性
A. was keen on B. was afraid of C. was eager to D. was careful with